
\begingroup
\centering
\begin{tabular}{m{6cm} m{1.4cm} m{1.4cm} m{1.4cm} m{1.4cm} m{1.4cm} m{1.4cm}}
   \toprule
                                         & (1)            & (2)            & (3)            & (4)            & (5)            & (6)\\  
   $\textbf{Panel A: ammonia}$\\
                                         &                &                &                &                &                &  \\  
   IHS restored wetland (acres)          & -0.009$^{***}$ & -0.005$^{***}$ & -0.006$^{***}$ & -0.006$^{***}$ & -0.004$^{***}$ & -0.007$^{***}$\\   
                                         & (0.001)        & (0.001)        & (0.002)        & (0.002)        & (0.001)        & (0.002)\\   
   IHS upstream restored wetland (acres) &                &                &                & -0.009$^{***}$ & -0.007$^{***}$ & -0.002$^{**}$\\   
                                         &                &                &                & (0.001)        & (0.001)        & (0.001)\\   
    \\
   Dependent variable mean               & 0.13781        & 0.13781        & 0.13781        & 0.12433        & 0.12433        & 0.12433\\  
   Observations                          & 121,933        & 121,933        & 121,933        & 96,460         & 96,460         & 96,460\\  
   Adjusted R$^2$                        & 0.13972        & 0.19608        & 0.44013        & 0.15557        & 0.20656        & 0.43567\\  
                                         &                &                &                &                &                &  \\  
\end{tabular}
\par\endgroup


